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TPS543820RPYR

8A sync SWIFT buck, 4-18V in, 0.5-7V out, ACM control, 14-VQFN-HR 2.5x3mm

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Manufacturer Part：

TPS543820RPYR

Package：

14-VQFN-HR (RPY) (2.5 x 3.0 x 0.9 mm)

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Description

Product Overview

The TPS543820RPYR from Texas Instruments is an 8A synchronous SWIFT step-down converter in a 14-pin VQFN-HR (2.5x3mm) package. Operating from 4V to 18V input with internally compensated Advanced Current Mode control, it delivers adjustable output from 0.5V to 7V with five selectable switching frequencies up to 2.2MHz.

Key Specifications

Input Voltage 4V ~ 18V
Output Current 8A continuous
Output Voltage 0.5V ~ 7V adjustable
Switching Frequency 500kHz / 750kHz / 1MHz / 1.5MHz / 2.2MHz
Integrated MOSFETs 25mOhm HS / 6.5mOhm LS
Vref Accuracy 0.5V +/-0.5% over temperature
Package 14-VQFN-HR (2.5 x 3.0mm)
Operating Temperature -40°C to +150°C (TJ)

Features

  • Internally compensated Advanced Current Mode (ACM) control
  • Integrated 25mOhm and 6.5mOhm MOSFETs
  • Five selectable switching frequencies
  • Selectable soft-start times: 0.5/1/2/4ms
  • Selectable current limit for 8A and 6A operation
  • Pin-to-pin compatible with TPS543620 and TPS543320

Applications

  • Wireless infrastructure and wired communications
  • Optical and fiber networking equipment
  • Test and measurement instruments
  • Medical and healthcare equipment
  • Industrial power supplies

The TPS543820RPYR from Texas Instruments is an 8A synchronous SWIFT step-down converter with internally compensated Advanced Current Mode (ACM) control in a compact 14-pin 2.5x3mm VQFN-HR HotRod package. Operating from 4V to 18V input, it delivers adjustable output from 0.5V to 7V with +/-0.5% reference accuracy. The integrated 25mOhm high-side and 6.5mOhm low-side MOSFETs minimize conduction losses. Five selectable switching frequencies (500kHz to 2.2MHz) allow optimization for efficiency or solution size. Pin-compatible with TPS543620 and TPS543320 for easy scalability.

The TPS543820 uses internally compensated Advanced Current Mode (ACM) control, which emulates peak current mode without requiring external compensation. An error amplifier compares the divided output voltage with the 0.5V reference. The ACM block generates a ramp signal that adds to the inductor current emulated signal. The resulting PWM duty cycle drives the integrated MOSFETs. Three selectable ramp options optimize the control loop for different L-C output filter combinations. In light-load conditions, the device enters pulse-skipping mode for improved efficiency. Selectable current limit supports both 8A and 6A operation.

Pin Name Type Function
1 VIN Power Input voltage (4-18V)
2 VIN Power Input voltage
3 SW Power Switch node (inductor)
4 SW Power Switch node
5 BOOT Analog Bootstrap capacitor
6 VOUT Analog Output voltage sense
7 AGND Power Analog ground
8 FB Input Feedback voltage
9 SYNC/FSEL Input Frequency select / external sync
10 PGOOD Output Power good indicator
11 EN Input Enable / UVLO adjust
12 MODE Input Mode select (SS time / Ilim)
13 BP5 Power Internal 5V rail bypass
14 PGND Power Power ground
  • 12V to 1V/1.2V FPGA core voltage rail at 8A
  • Wireless base station POL power supply
  • Optical networking equipment DC-DC conversion
  • Medical imaging system power modules
  • Industrial test equipment high-current rails
Manufacturer Part Number Package Notes
TI TPS543620RPYR 14-VQFN-HR 6A version, pin-compatible
TI TPS543320RPYR 14-VQFN-HR 3A version, pin-compatible
Monolithic Power MP8759GD-Z QFN-14 8A, 4.5-17V sync buck
Infineon IR3899MTRPBF PQFN-4×5 8A, 4.5-14V sync buck
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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